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Metabolic and bariatric surgery (MBS) has emerged as the most effective treatment for durable weight-loss in selected adolescents; however, national data on trends and outcomes remain limited. We aim to evaluate national trends, characteristics, and outcomes of adolescent MBS in Israel using the Israel National Bariatric Surgery Registry (INBSR).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>We conducted a nationwide retrospective analysis of adolescents (&lt;\u200918 years-old) who underwent MBS between 2017 and 2024. Data were extracted from the INBSR, a mandatory registry capturing procedures across all centers. Baseline demographics, obesity-related diseases, procedures, and weight-loss outcomes were analyzed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>A total of 460 adolescents underwent primary MBS. Mean age was 16.9\u2009\u00b1\u20090.8 years and mean body mass index was 46.4\u2009\u00b1\u20096.8\u00a0kg\/m\u00b2, with a female predominance (58.7%). Sleeve gastrectomy (SG) was most common (87.6%). Comorbidity burden was high, including fatty liver disease (60\u201373.8%), obstructive sleep apnea (~\u200951.3%), and type 2 diabetes (~\u200920%). SG achieved mean excess weight loss (%EWL) of 56.3% at 6 months, 70.7% at 2 years, and 68.5% at 4 years. Other procedures demonstrated greater weight-loss (~\u200980% EWL at 3 years). Follow-up declined, with dietitian visits decreasing from 47.6% at 1 year to 14.5% at 4 years. Sixteen patients required revisional surgery mainly due to recureent weight gain.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Adolescent MBS in Israel results in substantial and durable weight-loss. However, high comorbidity burden and poor long-term follow-up highlight the need for improved multidisciplinary care and retention strategies.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s11695-026-08820-0","type":"journal-article","created":{"date-parts":[[2026,6,26]],"date-time":"2026-06-26T15:57:33Z","timestamp":1782489453000},"page":"4276-4285","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["National Trends and Outcomes of Metabolic and Bariatric Surgery in Adolescents: Insights from the Israeli National Bariatric Surgery Registry"],"prefix":"10.1007","volume":"36","author":[{"given":"Noa","family":"Gosher","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Inbal","family":"Globus","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alina","family":"Rosenberg","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrei","family":"Keidar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shai Meron","family":"Eldar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4607-3462","authenticated-orcid":false,"given":"Adam","family":"Abu-Abeid","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,6,26]]},"reference":[{"key":"8820_CR1","unstructured":"World Health Organization. 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